How To Treat Numb Feeling In Feet?

My left foot feels like it goes cold and hot. It was swollen 4 days ago but has gone done and basically looks normal. It started 2 weeks ago after going for a long walk for the first time since spring rolled around. During the end of the walk, my legs felt very tired. 2 days later, my leg started to feel funny. It had this pain around the front calf & front of the ankle that felt like someone was pulling my leg hair....or pulling my veins, today the pain is almost gone. And I only felt it when I put my socks & shoes on. A week later, I puled up my pant leg and really noticed my socks leave a deep crease in my leg when I wear them. I never noticed it before. When I wake up in the mornings, it feels and looks great and normal. By the evening now, it feels hot/cold....annoying feeling. A numb feeling...but not numb..... Could this be from the long walk?